Abs Exercise 16:Cable-crossover jackknife (upper and lower abdominals)

1 Set, 20-25 Reps
For this move, you’ll need a cable-crossover machine, a two-handed triceps rope and ankle straps. Attach the rope to one of the low-pulley cables, then attach the ankle straps to the other low-pulley cable. Lie flat on your back with your head pointing toward the rope and your feet pointing toward the low-pulley cable. Reach back, grab both ends of the rope and pull it toward your shoulders until your fists are resting by the sides of your head (a). Keeping your legs together, slowly curl your torso up toward your midsection as you simultaneously draw your knees in toward your chest.